Re: [tsvwg] Error in RFC 9260 regarding fragmentation

[Michael Tuexen <[e-mail]>]

> On Feb 8, 2024, at 12:17, Sukun Tarachandani <[e-mail]> wrote:
> 
> In the RFC section Fragmentation and Reassembly, the last point for fragmentation of message in to data chunks reads:
> 
> 3) The transmitter MUST also set the B/E bits of the first DATA chunk in the series to 10, the B/E bits of the last DATA chunk in the series to 01, and the B/E bits of all other DATA chunks in the series to 00.
> This is confusing for small messages that take only a single chunk. I believe it should read something like
> 
> 3) The transmitter MUST set the B bit of the first DATA chunk in the series to 1 and the B bit of all other DATA chunks in the series to 0. The transmitter MUST set the E bit of the last DATA chunk in the series to 1 and the E bit of all other DATA chunks in the series to 0.
The list, from which you are citing the third entry, describes
fragmentation, as it starts with "Fragmentation takes the following steps".
So it does not describe the sending of un-fragmented messages.
This is described by the first sentence of
https://datatracker.ietf.org/doc/html/rfc9260#section-3.3.1-4
and the last row of the table 
https://datatracker.ietf.org/doc/html/rfc9260#table-4.

Have you observed any problems with implementations?

Best regards
Michael
> 
> -- 
> Sukun